3249689256 has 144 divisors (see below), whose sum is σ = 9762660180. Its totient is φ = 975744000.

The previous prime is 3249689237. The next prime is 3249689269. The reversal of 3249689256 is 6529869423.

It is a happy number.

3249689256 is a `hidden beast` number, since 324 + 9 + 68 + 9 + 256 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2549240100 + 700449156 = 50490^2 + 26466^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 982806 + ... + 986106.

Almost surely, 2^3249689256 is an apocalyptic number.

3249689256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3249689256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4881330090).

3249689256 is an abundant number, since it is smaller than the sum of its proper divisors (6512970924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3249689256 is a wasteful number, since it uses less digits than its factorization.

3249689256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448 (or 3430 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 3249689256 is about 57006.0457846359. The cubic root of 3249689256 is about 1481.2008235770.

The spelling of 3249689256 in words is "three billion, two hundred forty-nine million, six hundred eighty-nine thousand, two hundred fifty-six".